Originally posted by Draconifors:

Draugr elites only drop entrails and trophies, both of which can unlock one recipe.

What exactly do you mean by "every single weapon, crafting recipe"?

Sounds like there is more to this than what you wrote.

Edit: I see from your post history that you're most likely using mods. Which would explain the issue; this definitely sounds like a mod problem, unless dev commands were involved.